That impeller got run dry is what did it in. You can tell by the wear on it as age tends to just lay the vanes over whereas running it dry burns them off. And put a 140 t-stat back in it since it is a raw water cooled engine. You could do a 160, but the 140 seems to work better and reduce temp spikes from my experience.
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD 
AND THE PINK JEEP!!!! R.I.P.
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